EP0230646B1 - Liquid cooled housing for rotary piston combustion engine - Google Patents

Liquid cooled housing for rotary piston combustion engine Download PDF

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Publication number
EP0230646B1
EP0230646B1 EP86117939A EP86117939A EP0230646B1 EP 0230646 B1 EP0230646 B1 EP 0230646B1 EP 86117939 A EP86117939 A EP 86117939A EP 86117939 A EP86117939 A EP 86117939A EP 0230646 B1 EP0230646 B1 EP 0230646B1
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EP
European Patent Office
Prior art keywords
housing
cooling medium
housing part
well
whashers
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
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EP86117939A
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German (de)
French (fr)
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EP0230646A1 (en
Inventor
Dankwart Eiermann
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Wankel GmbH
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Wankel GmbH
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Publication date
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Priority to AT86117939T priority Critical patent/ATE48672T1/en
Publication of EP0230646A1 publication Critical patent/EP0230646A1/en
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Publication of EP0230646B1 publication Critical patent/EP0230646B1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B55/00—Internal-combustion aspects of rotary pistons; Outer members for co-operation with rotary pistons
    • F02B55/08—Outer members for co-operation with rotary pistons; Casings
    • F02B55/10—Cooling thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/06—Heating; Cooling; Heat insulation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the invention relates to the housing of a rotary piston internal combustion engine of the trochoid type, which consists of side parts and a double-arched jacket raceway and is penetrated by an eccentric shaft, on the eccentric of which a triangular piston rotates in sliding engagement on the jacket raceway.
  • the invention relates in particular to a multi-disc rotary piston internal combustion engine of the same type in which components are installed between the individual jacket parts and pistons.
  • Such housings have cavities in the jacket raceway, side and jacket parts or side parts through which coolant flows.
  • the position and flow range of these cavities take into account the heat generated during operation and the cooling requirements of individual machine parts such as the sealing system or the bearing.
  • the cooling rooms are essentially in the area of the hot bend and their task here is not only to cool the combustion chamber walls, but above all to cool the pistons and their sealing parts. There is therefore an obvious requirement to achieve the same temperatures on all piston side walls, from which the heat is to be dissipated in particular.
  • the cooling system must be matched to the intended use of the internal combustion engine.
  • a series connection of the coolant paths is advisable.
  • the temperature is set to a level within 2 to 3 ° C between the start and end of the coolant circuit.
  • series connection is to be understood that, for example, in a two-disc machine, the coolant first comes from the heat exchanger through the first side window, then through the adjacent first jacket part, from there through the middle section and from there through the second jacket part and finally through the second side window and from because back to the heat exchanger or as long as the operating temperature has not yet been reached, this is done in a closed circuit.
  • a housing is accordingly available in which either a parallel connection or a series connection of the coolant circuit can be obtained by optionally inserting sealing disks or screens in the connecting tube supplying the coolant to the housing sections.
  • the housing construction as such is not affected in any way, and the insert cutouts for the closure disks or the panels can be the same, so that only one or the other need be used during assembly.
  • the diameter of the diaphragm openings can be adapted or exchanged for the respective cooling conditions.
  • 1 is the housing of a rotary piston internal combustion engine, which consists of individual housing sections, 2 representing the first side part, 3 the first jacket part, 4 the middle part, 5 the second jacket part and 6 the second side part.
  • the heat exchanger is designated 7.
  • a thermostat is provided which closes the coolant circuit 9 from the heat exchanger 7 as long as the operation temperature has not yet been reached.
  • 10 is a circulation pump for the housing circuit of the coolant
  • 11 is a smaller circulation pump for a bypass 12 leading through a hollow shaft.
  • the coolant flows in the direction of parts 13 and 14 first through the first side part 2 in the drawing upwards and from there through the first jacket part 3 in the drawing downwards, and further through the other housing sections 4 to 6 and from the side part 6 to the circulation pump 10, via which it is conveyed back to the heat exchanger 7 or via the line 16 to the thermostat 8.
  • the bypass 12 for the eccentric shafts and eccentric bearing cooling branches off from the coolant circuit 9 at 17.
  • the coolant flowing through the shaft is returned to the circuit 9 by the circulation pump 11. There is therefore a series connection in which the individual housing sections are flowed through by the coolant, which is expedient in machines with a uniform load.
  • FIG. 2 this type of circuit is shown in detail in a housing of a two-disc rotary piston machine.
  • the housing sections are the right side part 22, the right jacket part 23, the middle part 24, the left jacket part 25 and the left side part 26.
  • the heat exchanger is shown schematically at 27, 28 denotes the thermostat, 29 the housing coolant circuit, 30 the large blades and 31 the small wings of a circulating pump 32, which is attached to the end of the eccentric shaft 33, which is only partially shown, and rotates with it.
  • the eccentric shaft 33 is hollow.
  • a feed pipe 34 with spacers 35 is fixed and arranged in such a way that an annular space 36 remains open between the tubular end of the eccentric shaft 33 and the feed pipe 34.
  • the coolant circuit 29 enters the coolant inlet opening 37 of the housing 1 into the right side part 22 and passes through its cavities 38 from top to bottom in order to pass into the cavities 39 of the right jacket part 23 on the underside of the side part 22 and then the middle part 24, the to flow through the left jacket part 25 and the left side part 26 in the same way in the direction of the arrows 40, 41, 42. From the underside of the left side part 26, the coolant runs through a return pipe 43 through all the housing sections 22 to 26 to the large vanes 30 of the circulating pump 32 and from there to the thermostat 28.
  • the bypass line for cooling the eccentric shaft 33 is removed from the line at 44 between heat exchanger 27 and thermostat 28 to the supply pipe 34 and from its left end, not shown, through the cavity of the eccentric shaft 33 through the annular space 36 to the small vanes 31 of the circulation pump 32 and from there into the general coolant circuit 29.
  • closure disk 45 Between the right side part 22 and the right jacket part 23 there is a closure disk 45 and between the middle part 24 and the left jacket part 25 there is also a closure disk 46, both of which each have a small opening 47 for pressure compensation. They shut off a connecting pipe 48 for the supply of the coolant and force the coolant circuit into the series circuit shown schematically in FIG. 1.
  • this connecting tube 48 is continuously open through all housing sections 22 to 26 in the housing shown there, which is completely identical with the housing shown in FIG. 2.
  • the coolant can therefore flow to all housing sections 22 to 26 directly and simultaneously from above in a parallel connection.
  • this connecting tube 48 there is a diaphragm 49 with a large opening between the right side part 22 and the right jacket part 23 and a diaphragm 50 at the transitions between the right jacket part 23 and the middle part 24 and a diaphragm 51 and from the middle part 24 to the left jacket part 25 at the transition from the left jacket part 25 to the left side part 26, an orifice 52 is provided, each with smaller and smaller openings, which regulate the inflow to the individual housing sections 22 to 26 in order to force a uniform flow through all of these housing sections.
  • the coolant is returned from all housing sections 22 to 26 through the return pipe 43, as is shown and described in the embodiment of FIG. 2.
  • the two housings 21 shown in FIGS. 2 and 3 are therefore, apart from the sealing off of the connecting pipe 48 by the closure disks 45 and 46 or the panels 49, 50, 51 and 52, completely identical and interchangeable in the individual parts.
  • the coolant circuit can be guided through the housing 21 in parallel or in series.
  • the bypass line can be branched off and returned in the same way in both cases.
  • a conventional uncooled shaft can also be used in the housing and bypass cooling can be dispensed with.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Reciprocating Pumps (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • General Details Of Gearings (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

A liquid or fluid cooled housing of a rotary piston internal combustion engine of trochoidal type of construction consisting of side parts and a dual-arc housing inner surfacing and having an eccentric shaft passing through the side parts. A triangular piston rotates upon an eccentric mounted on the eccentric shaft and corners of the triangular piston are in sliding engagement along the housing inner surfacing. A connection tube is provided supplying cooling medium into the individual housing sections. A series connection of the cooling medium circulation is produced between a first side part in direction of cooling medium flow and a first housing part as well as between a center part and a second housing part respectively having a closure disc installed therewith. Perforations are provided for pressure equalization in the closure discs. For production of a parallel connection of cooling medium circulation between a first side disc in a direction of cooling medium flow and a first housing part there is installed a shutter and further shutters are provided between the first housing part and a center part as well as between the center part and a second housing part in flow direction and between a second housing part and a second side part. Parts are interchangeable irrespective of series and parallel cooling medium circulation. A by-pass for cooling of an eccentric shaft and eccentric bearings thereof branches off independently of series or parallel connection of the cooling medium circulation.

Description

Die Erfindung betrifft das Gehäuse einer Rotationskolbenbrennkraftmaschine der Trochoiden-Bauart, das aus Seitenteilen und einer zweibogigen Mantellaufbahn besteht und von einer Exzenterwelle durchsetzt ist, auf deren Exzenter ein dreickiger Kolben in gleitendem Eingriff an der Mantellaufbahn umläuft. Die Erfindung betrifft insbesondere eine mehrscheibige Rotationskolbenbrennkraftmaschine der gleichen Bauart, bei der zwischen den einzelnen Mantelteilen und Kolben Mitteile eingebaut sind.The invention relates to the housing of a rotary piston internal combustion engine of the trochoid type, which consists of side parts and a double-arched jacket raceway and is penetrated by an eccentric shaft, on the eccentric of which a triangular piston rotates in sliding engagement on the jacket raceway. The invention relates in particular to a multi-disc rotary piston internal combustion engine of the same type in which components are installed between the individual jacket parts and pistons.

Derartige Gehäuse weisen Hohlräume In Mantellaufbahn, Seiten- und Mantelteilen bzw. Seitenteilen auf, durch die Kühlflüssigkeit strömt. Dabei wird durch Lage und Durchflußweite dieser Hohlräume der beim Betrieb anfallenden Wärme und den Kühlerfordernissen einzelner Maschinenteile wie des Dichtsystems oder der Lager Rechnung getragen. Demnach befinden sich die Kühlräume im wesentlichen im Bereich des heißen Bogens und sie haben hier die Aufgabe, nicht nur die Brennraumwände, sondern vor allem die Kolben und deren Dichtteile zu kühlen. Es besteht daher ein naheliegendes Erfordernis an allen Kolbenseitenwänden, von denen vor allen die Wärme abgeleitet werden soll, gleiche Temperaturen zu erzielen.Such housings have cavities in the jacket raceway, side and jacket parts or side parts through which coolant flows. The position and flow range of these cavities take into account the heat generated during operation and the cooling requirements of individual machine parts such as the sealing system or the bearing. Accordingly, the cooling rooms are essentially in the area of the hot bend and their task here is not only to cool the combustion chamber walls, but above all to cool the pistons and their sealing parts. There is therefore an obvious requirement to achieve the same temperatures on all piston side walls, from which the heat is to be dissipated in particular.

Das Kühlsystem muß auf den Verwendungszweck der Brennkraftmaschine jeweils abgestimmt sein. Bei stationären Typen, die mit gleichmäßiger Last ohne Belastungsspitzen laufen und daher mit reduzierten Kühlung gefahren werden können, ist eine Serienschaltung der Kühlflüssigkeitswege zweckmäßig. Die Temperatur stellt sich im Betrieb auf ein Niveau innerhalb von 2 bis 3°C zwischen Anfang und Ende des Kühlmittelkreislaufs ein. Unter Serienschaltung ist zu verstehen, daß zum Beispiel bei einer Zweischeibenmaschine das Kühlmittel zunächst vom Wärmetauscher kommend durch die erste Seitenscheibe, dann durch das anliegende erste Mantelteil, von diesem durch das Mittelteil und von dort durch das zweite Mantelteil und schließlich durch die zweite Seitenscheibe und von da zurück zum Wärmetauscher oder solange die Betriebstemperatur noch nicht erreicht ist auf dem genannten Weg in geschlossenem Kreislauf geführt wird.The cooling system must be matched to the intended use of the internal combustion engine. In the case of stationary types that run with a uniform load without peak loads and can therefore be operated with reduced cooling, a series connection of the coolant paths is advisable. During operation, the temperature is set to a level within 2 to 3 ° C between the start and end of the coolant circuit. By series connection is to be understood that, for example, in a two-disc machine, the coolant first comes from the heat exchanger through the first side window, then through the adjacent first jacket part, from there through the middle section and from there through the second jacket part and finally through the second side window and from because back to the heat exchanger or as long as the operating temperature has not yet been reached, this is done in a closed circuit.

Bei Fahr- und Flugzeugmotoren mit deren sehr variabler Belastung mit plötzlich einsetzenden Spitzen würden bei der beschriebenen Art der Kühlung Überhitzungen eintreten. Es ist hier nicht vertretbar, die einzelnen Gehäuseabschnitte hintereinander mit Kühlmittel zu versorgen, da dann in den später geschalteten zu hohe Temperaturen auftreten. Es ist daher eine Parallelschaltung der einzelnen Gehäuseabschnitte zweckmäßig, so daß jeder einzelne Abschnitt des Gehäuses unmittelbar und sofort mit vom Wärmetauscher zufließendem Kühlmittel durchströmt wird, sofern nicht bei zu niedriger Temperatur ein geschlossener Kreislauf nach Verschluß des zwischen Gehäusekühlräumen und Wärmetauscher zwischengeschalteten Thermostaten hergestellt wird.Overheating would occur in the described type of cooling for traction and aircraft engines with their very variable load with suddenly starting tips. It is not justifiable here to supply the individual housing sections with coolant in succession, since excessive temperatures then occur in the later switched sections. It is therefore expedient to connect the individual housing sections in parallel, so that each individual section of the housing is immediately and immediately flowed through with coolant flowing in from the heat exchanger, unless a closed circuit is produced at too low a temperature after the thermostats interposed between the housing cooling chambers and the heat exchanger are closed.

Bei einer in US-A 3 572 984 beschriebenen Konstruktion einer der eingangs angegebenen Maschinen ist ein gemeinsames Verbindungsrohr für die Zuführung des Kühlmittels vorgesehen, von dem dasKühlmittel zu den einzelnen Gehäuseabschnitten abgezweigt wird. Damit kann jedoch immer nur je nach Ausbildung dieses Verbindungsrohres und seiner Abzweigungen ganz bestimmten Erfoerdernissen an das Kühlsystem Rechnung getragen werden. Serien- bzw. Parallelschaltungen des Kühlmittelkreislaufes erfordern jedoch jeweils eine gesonderte Gehäusekonstruktion. Bei Vielzweckmotoren oder Konstruktionen für große Serienfertigungen, die sowohl für stationäre Motoren wie für solche sehr veriablen Kennfeldes ausgelegt sind, ist es notwendig, eine Anordnung des Gehäusekühlweges zur Verfügung zu haben, die durch einfache Maßnahmen für den einen oder den anderen Zweck geschaltet werden kann ohne die Gehäusekonstruktion selbst zu verändern. Der Erfindung war eine solche Anordnung als Aufgabe gestellt.In a construction of one of the machines specified in US Pat. No. 3,572,984, a common connecting pipe for the supply of the coolant is provided, from which the coolant is branched off to the individual housing sections. However, depending on the design of this connecting pipe and its branches, specific requirements for the cooling system can only be taken into account. However, series or parallel connections of the coolant circuit each require a separate housing construction. In the case of multi-purpose motors or constructions for large series production, which are designed both for stationary motors and for such a very variable map, it is necessary to have an arrangement of the housing cooling path available that can be switched for one or the other purpose by simple measures without to change the housing construction itself. Such an arrangement was the object of the invention.

Die Lösung dieser Aufgabe ergibt sich aus den Ansprüchen.The solution to this problem arises from the claims.

Erfindungsgemäß steht demnach ein Gehäuse zur Verfügung,bei dem durch wahlweises Einsetzen von Verschlußscheiben oder von Blenden im das Kühlmittel den Gehäuseabschnitten zuleitenden Verbindungsrohr entweder eine Parallelschaltung oder eine Serienschaltung des Kühlmittelkreislaufes erhalten werden kann.According to the invention, a housing is accordingly available in which either a parallel connection or a series connection of the coolant circuit can be obtained by optionally inserting sealing disks or screens in the connecting tube supplying the coolant to the housing sections.

Die Gehäusekonstruktion als solche wird davon in keiner Weise betroffen, auch die Einsatzausfräsungen für die Verschlußscheiben bzw. die Blenden können die gleichen sein, so daß jeweils bei der Montage nur entweder die einen oder die anderen eingesetzt zu werden brauchen. Dabei können die Blendenöffnungen in ihrem Durchmesser den jeweiligen Kühlbedingungen angepaßt bzw. ausgetauscht werden. Die Erfindung bringt somit insbesondere bei großen Serienfertigungen ganz erhebliche Einsparungen und Erleichterungen, da es nur eines einzigen Modells des Gehäuses für die verschiedensten Maschinentypen bedarf.The housing construction as such is not affected in any way, and the insert cutouts for the closure disks or the panels can be the same, so that only one or the other need be used during assembly. The diameter of the diaphragm openings can be adapted or exchanged for the respective cooling conditions. The invention thus brings about considerable savings and simplifications, particularly in large series production, since only a single model of the housing is required for the most varied of machine types.

Im folgenden werden anhand der Zeichnungen zwei Ausführungsbeispiele im einzelnen beschrieben.Two exemplary embodiments are described in detail below with reference to the drawings.

Es zeigen

  • Fig. 1 ein Schema für eine Serienschaltung des Gehäusekühlmittelkreislaufes;
  • Fig. 2 einen Radialschnitt durch ein Gehäuse einer erfindungsgemäßen Rotationskolbenverbrennungsmaschine mit einer Fig. 1 entsprechenden Serienschaltung;
  • Fig. 3 einen in der Senkrechten verkürzten Radialschnitt durch die gleiche Maschine, jedoch mit Parallelschaltung des Gehäusekühlmittelkreislaufes.
Show it
  • Figure 1 is a schematic for a series connection of the housing coolant circuit.
  • FIG. 2 shows a radial section through a housing of a rotary piston internal combustion engine according to the invention with a series circuit corresponding to FIG. 1;
  • Fig. 3 is a vertical section shortened radial section through the same machine, but with parallel connection of the housing coolant circuit.

Bei dem in Fig. 1 dargestellten Schaltschema ist 1 das Gehäuse einer Rotationskolbenbrennkraftmaschine, das aus einzelnen Gehäuseabschnitten besteht, wobei 2 das erste Seitenteil, 3 das erste Mantelteil, 4 das Mittelteil, 5 das zweite Mantelteil und 6 das zweite Seitenteil darstellen. Der Wärmetauscher ist mit 7 bezeichnet. Bei 8 ist ein Thermostat vorgesehen, der den Kühlmittelkreislauf 9 vom Wärmetauscher 7 abschließt, solange die Betriebstemperatur noch nicht erreicht ist. 10 ist eine Umwälzpumpe für den Gehäusekreislauf des Kühlmittels, 11 eine kleinere Umwälzpumpe für einen durch eine Hohlwelle führenden Bypass 12.In the circuit diagram shown in Fig. 1, 1 is the housing of a rotary piston internal combustion engine, which consists of individual housing sections, 2 representing the first side part, 3 the first jacket part, 4 the middle part, 5 the second jacket part and 6 the second side part. The heat exchanger is designated 7. At 8, a thermostat is provided which closes the coolant circuit 9 from the heat exchanger 7 as long as the operation temperature has not yet been reached. 10 is a circulation pump for the housing circuit of the coolant, 11 is a smaller circulation pump for a bypass 12 leading through a hollow shaft.

Das Kühlmittel fließt in Richtung der Teile 13 und 14 zuerst durch das erste Seitenteil 2 in der Zeichnung nach oben und von da durch das erste Mantelteil 3 in der Zeichnung nach unten, und weiter durch die übrigen Gehäuseabschnitte 4 bis 6 und vom Seitenteil 6 zur Umwälzpumpe 10, über die es zurück zum Wärmetauscher 7 bzw. über die Leitung 16 zum Thermostaten 8 gefördert wird. Der Bypass 12 für die Exzenterwellen und Exzenterlagerkühlung zweigt bei 17 von dem Kühlmittelkreislauf 9 ab. Das die Welle durchströmende Kühlmittel wird von der Umwälzpumpe 11, in den Kreislauf 9 zurückgefördert. Es liegt demnach eine Serienschaltung vor, bei der die einzelnen Gehäuseabschnitte hintereinander vom Kühlmittel durchflossen werden, was bei Maschinen mit gleichmäßiger Belastung zweckmäßig ist.The coolant flows in the direction of parts 13 and 14 first through the first side part 2 in the drawing upwards and from there through the first jacket part 3 in the drawing downwards, and further through the other housing sections 4 to 6 and from the side part 6 to the circulation pump 10, via which it is conveyed back to the heat exchanger 7 or via the line 16 to the thermostat 8. The bypass 12 for the eccentric shafts and eccentric bearing cooling branches off from the coolant circuit 9 at 17. The coolant flowing through the shaft is returned to the circuit 9 by the circulation pump 11. There is therefore a series connection in which the individual housing sections are flowed through by the coolant, which is expedient in machines with a uniform load.

In Fig. 2 ist diese Art des Kreislaufes bei einem Gehäuse einer zweischeibigen Rotationskolbenmaschine im einzelnen dargestellt. Die Gehäuseabschnitte sind das rechte Seitenteil 22, das rechte Mantelteil 23, das Mittelteil 24, das linke Mantelteil 25 und das linke Seitenteil 26. Der Wärmetauscher ist bei 27 schematisch dargestellt, 28 bezeichnet den Thermostaten, 29 den Gehäusekühlmittelkreislauf, 30 die großen Flügel und 31 die kleinen Flügel einer Umwälzpumpe 32, die auf dem Ende der nur teilweise dargestellten Exzenterwelle 33 befestigt ist und mit dieser umläuft. Die Exzenterwelle 33 ist hohl ausgebildet. In ihrem dargestellten Ende ist ein Zuleitungsrohr 34 mit Abstandshaltern 35 fest und so angeordnet, daß zwischen dem rohrförmigen Ende der Exzenterwelle 33 und dem Zuleitungsrohr 34 ein Ringraum 36 offenbleibt.In Fig. 2, this type of circuit is shown in detail in a housing of a two-disc rotary piston machine. The housing sections are the right side part 22, the right jacket part 23, the middle part 24, the left jacket part 25 and the left side part 26. The heat exchanger is shown schematically at 27, 28 denotes the thermostat, 29 the housing coolant circuit, 30 the large blades and 31 the small wings of a circulating pump 32, which is attached to the end of the eccentric shaft 33, which is only partially shown, and rotates with it. The eccentric shaft 33 is hollow. In its illustrated end, a feed pipe 34 with spacers 35 is fixed and arranged in such a way that an annular space 36 remains open between the tubular end of the eccentric shaft 33 and the feed pipe 34.

Der Kühlmittelkreislauf 29 tritt bei der Kühlmitteleinlaßöffnugn 37 des Gehäuses 1 in das rechte Seitenteil 22 ein und durchläuft dessen Hohlräume 38 von oben nach unten, um an der Unterseite des Seitenteils 22 in die Hohlräume 39 des rechten Mantelteiles 23 überzutreten und anschließend das Mittelteil 24, das linke Mantelteil 25 und das linke Seitenteil 26 in gleicher Weise in Richtung der Pfeile 40,41,42 zu durchströmen. Von der Unterseite des linken Seitenteiles 26 läuft das Külmittel durch ein durch alle Gehäuseabschnitte 22 bis 26 durchgehendes Rückfuhrrohr 43 zu den großen Flügeln 30 der Umwälzpumpe 32 und von da zum Thermostaten 28. Die Bypassleitung für die Kühlung der Exzenterwelle 33 wird bei 44 von der Leitung zwischen Wärmetauscher 27 und Thermostat 28 zu dem Zuleitungsrohr 34 und von dessen nicht dargestelltem linken Ende durch den Hohlraum der Exzenterwelle 33 durch den Ringraum 36 zu den kleinen Flügeln 31 der Umwälzpumpe 32 und von dort in den allgemeinen Kühlmittelkreislauf 29 geführt.The coolant circuit 29 enters the coolant inlet opening 37 of the housing 1 into the right side part 22 and passes through its cavities 38 from top to bottom in order to pass into the cavities 39 of the right jacket part 23 on the underside of the side part 22 and then the middle part 24, the to flow through the left jacket part 25 and the left side part 26 in the same way in the direction of the arrows 40, 41, 42. From the underside of the left side part 26, the coolant runs through a return pipe 43 through all the housing sections 22 to 26 to the large vanes 30 of the circulating pump 32 and from there to the thermostat 28. The bypass line for cooling the eccentric shaft 33 is removed from the line at 44 between heat exchanger 27 and thermostat 28 to the supply pipe 34 and from its left end, not shown, through the cavity of the eccentric shaft 33 through the annular space 36 to the small vanes 31 of the circulation pump 32 and from there into the general coolant circuit 29.

Zwischen dem rechten Seitenteil 22 und dem rechten Mantelteil 23 ist eine Verschlußscheibe 45 und zwischen dem Mittelteil 24 und dem linken Mantelteil 25 eine ebensolche Verschlußscheibe 46 vorgesehen, die beide jeweils eine kleine Durchbrechung 47 zum Druckausgleich aufweisen. Sie sperren ein Verbindungsrohr 48 für die Zuführung des Kühlmittels ab und zwingen den Kühlmittelkreislauf in die in Fig. 1 schematisch dargestellte Serienschaltung.Between the right side part 22 and the right jacket part 23 there is a closure disk 45 and between the middle part 24 and the left jacket part 25 there is also a closure disk 46, both of which each have a small opening 47 for pressure compensation. They shut off a connecting pipe 48 for the supply of the coolant and force the coolant circuit into the series circuit shown schematically in FIG. 1.

In Fig. 3 ist dieses Verbindungsrohr 48 bei dem dort dargestellten sonst mit dem in Fig. 2 gezeigten völlig gleichen Gehäuse durch alle Gehäuseabschnitte 22 bis 26 durchgehend offen. Das Kühlmittel kann also zu allen Gehäuseabschnitten 22 bis 26 unmittelbar und gleichzeitig von oben in einer Parallelschaltung zuströmen. In diesem Verbindungsrohr 48 sind jedoch zwischen dem rechten Seitenteil 22 und dem rechten Mantelteil 23 eine Blende 49 mit großer Öffnung und an den Übergängen zwischen dem rechten Mantelteil 23 und dem Mittelteil 24 eine Blende 50 und vom Mittelteil 24 zum linken Mantelteil 25 eine Blende 51 und an dem Übergang von dem linken Mantelteil 25 zum linken Seitenteil 26 eine Blende 52 mit jeweils kleiner werdenden Öffnungen vorgesehen, die den Zulauf zu den einzelnen Gehäuseabschnitten 22 bis 26 regulieren, um eine gleichmäßige Durchströmung aller dieser Gehäuseabschnitte zu erzwingen. Der Rücklauf des Kühlmittels erfolgt von allen Gehäuseabschnitten 22 bis 26 durch das Rückführrohr 43, wie dies bei der Ausführungsform zu Fig. 2 dargestellt und beschrieben ist.In FIG. 3, this connecting tube 48 is continuously open through all housing sections 22 to 26 in the housing shown there, which is completely identical with the housing shown in FIG. 2. The coolant can therefore flow to all housing sections 22 to 26 directly and simultaneously from above in a parallel connection. In this connecting tube 48, however, there is a diaphragm 49 with a large opening between the right side part 22 and the right jacket part 23 and a diaphragm 50 at the transitions between the right jacket part 23 and the middle part 24 and a diaphragm 51 and from the middle part 24 to the left jacket part 25 at the transition from the left jacket part 25 to the left side part 26, an orifice 52 is provided, each with smaller and smaller openings, which regulate the inflow to the individual housing sections 22 to 26 in order to force a uniform flow through all of these housing sections. The coolant is returned from all housing sections 22 to 26 through the return pipe 43, as is shown and described in the embodiment of FIG. 2.

Die beiden in Fig. 2 und 3 dargestellten Gehäuse 21 sind demnach bis auf die Abschottung des Verbindungsrohres 48 durch die Verschlußscheiben 45 und 46 bzw. die Blenden 49, 50, 51 und 52 völlig gleich und untereinander in den Einzelteilen austauschbar. Durch Einsetzen der Verschlußscheiben 45, 46 bzw. der Blenden 49, 50, 51, 52 kann der Kühlmittelkreislauf parallel oder in Serie durch das Gehäuse 21 geführt werden. Die Bypassleitung kann in beiden Fällen in der gleichen Weise abgezweigt und zurückgeführt werden. Anstelle der Bypass-gekühlten Welle kann auch eine herkömmliche ungekühlte Welle im Gehäuse eingesetzt und auf die Bypasskühlung verzichtet werden.The two housings 21 shown in FIGS. 2 and 3 are therefore, apart from the sealing off of the connecting pipe 48 by the closure disks 45 and 46 or the panels 49, 50, 51 and 52, completely identical and interchangeable in the individual parts. By inserting the closure disks 45, 46 or the panels 49, 50, 51, 52, the coolant circuit can be guided through the housing 21 in parallel or in series. The bypass line can be branched off and returned in the same way in both cases. Instead of the bypass-cooled shaft, a conventional uncooled shaft can also be used in the housing and bypass cooling can be dispensed with.

BezuaszeichenverzeichnisReference index Zu Fig. 11

  • 1 Gehäuse1 housing
  • 2 erstes Seitenteil2 first side part
  • 3 erstes Mantelteil3 first part of the jacket
  • 4 Mittelteil4 middle section
  • 5 zweites Mantelteil5 second jacket part
  • 6 zweites Seitenteil6 second side part
  • 7 Wärmetauscher7 heat exchangers
  • 8 Thermostat8 thermostat
  • 9 Kühlmittelkreislauf9 coolant circuit
  • 10 Umwälzpumpe für 910 circulation pump for 9
  • 11 Umwälzpumpe für 1211 Circulation pump for 12
  • 12 Bypass12 bypass
  • 13,14 Richtungspfeile13.14 directional arrows
  • 15 Leitung 10,11 nach 715 line 10, 11 to 7
  • 16 Leitung 10,11 nach 816 line 10, 11 to 8
  • 17 Abzweigung für Bypass17 Bypass junction
Zu Fia. 2To Fig. 2nd

  • 21 Gehäuse21 housing
  • 22 rechtes Seitenteil22 right side panel
  • 23 rechtes Mantelteil23 right jacket part
  • 24 Mittelteil24 middle section
  • 25 linkes Mantelteil25 left jacket part
  • 26 linkes Seitenteil26 left side panel
  • 27 Wärmetauscher27 heat exchanger
  • 28 Thermostatl28 Thermostat
  • 29 Kühlmittelkreislauf29 Coolant circuit
  • 30 große Flügel von 3230 large wings of 32
  • 31 kleine Flügel von 3231 small wings of 32
  • 32 Umwälzpumpe32 circulation pump
  • 33 Exzenterwelle33 eccentric shaft
  • 34 Zuleitungsrohr in 3334 supply pipe in 33
  • 35 Abstandshalter35 spacers
  • 36 Ringraum zwischen 33 und 3436 annulus between 33 and 34
  • 37 Kühlmitteleinlaßöffnung37 Coolant inlet opening
  • 38 Hohlräume in 2238 cavities in 22
  • 39 Hohlräume in 2339 cavities in 23
  • 40,41,42 Richtungspfeile40,41,42 directional arrows
  • 43 Rückführrohr43 return pipe
  • 44 Bypass44 bypass
  • 45 rechte Verschlußscheibe45 right locking disc
  • 46 linke Verschlußscheibe46 left locking disc
  • 47 Durchbrechnung in 45,4647 breakthrough in 45.46
  • 48 Verbindungsrohr48 connecting tube
  • 49,50,51,52 Blenden49, 50, 51, 52 apertures

Claims (7)

1. Liquid cooled housing (21) for a rotary piston combustion engine of trochoidal type of construction, which consists of side parts (22, 26) as well as at least one housing part (23, 25) with a dual-curved inner housing surfacing respectively and having an eccentric shaft for each housing part (23, 25) and a triangular piston rotating upon the eccentric or ec- centrics respectively with corners of the piston in sliding engagement along the inner housing surfacing, comprising a connection tube (48) leading to individual housing sections (22, 23, 24, 25, 26) wherein a cooling medium is supplied thereto, characterized in that the housing comprising two housing parts (23, 25) as well as a central middle part (24) and that in the connecting tube (48) shutter discs (45, 46) or whashers (49, 50, 51, 52) with selective bores are inserted between the individual housing sections.
2. A housing according to claim 1, characterized in that comprising a first housing part (23) and a second housing part (25) as well as a central middle part (24), for production of a series connection of the cooling medium circulation a shutter disc (45, 46) respectively is installed between the first side part (22) in the direction of cooling medium flow and the first housing part (23) as well as between the central middle part (24) and the second housing part (25).
3. Housing according to claim 2, characterized in that in the shutter discs (45, 46) perforations (47) are located for pressure equalization.
4. Housing according to claim 1, characterized in that comprising a whasher (49) for production of a parallel connection of cooling medium circulation between a first side part (22) in direction of cooling medium flow and a first housing part (23) as well as shutters (50, 51, 52) respectively between a first housing part (23) and a central middle part (24) as well as between a central middle part (24) and a second housing part (25) in flow direction and between a second housing part (25) and a second side part (26), whereby whasher opening of whashers (50, 51, 52) means respectively following in flow direction, is smaller than that of the proceeding whashers (49, 50, 51).
5. Housing according to claim 1, 2, 3, 4, characterized in that said shutter discs (45, 46) and whashers (49, 50, 51, 52) respectively have identical measurements and installation profile shapes respectively screwings.
6. Housing according to claim 1, 2, 3, 4, 5, characterized in that said shutter discs (45, 46) and whashers (49, 50, 51, 52) respectively are round flat discs respectively flat rings, and that turned out recesses are provided in connection surfaces of the housing sections (22, 23, 24, 25, 26), into which said shutter discs (45, 46) respectively said whashers (49, 50, 51, 52) can be installed.
7. A housing according to claim 1, 2, 3, 4, 5, 6, characterized in that independently of series- or parallel connection of the cooling medium circulation a by-pass (12, 34, 36) including a conduit for cooling of the eccentric shaft (33) and its eccentric bearings thereof is branched-off.
EP86117939A 1985-12-23 1986-12-23 Liquid cooled housing for rotary piston combustion engine Expired EP0230646B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86117939T ATE48672T1 (en) 1985-12-23 1986-12-23 LIQUID-COOLED HOUSING OF A ROTARY-PISTONS ENGINE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853545821 DE3545821A1 (en) 1985-12-23 1985-12-23 LIQUID-COOLED HOUSING OF A ROTARY PISTON INTERNAL COMBUSTION ENGINE
DE3545821 1985-12-23

Publications (2)

Publication Number Publication Date
EP0230646A1 EP0230646A1 (en) 1987-08-05
EP0230646B1 true EP0230646B1 (en) 1989-12-13

Family

ID=6289404

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86117939A Expired EP0230646B1 (en) 1985-12-23 1986-12-23 Liquid cooled housing for rotary piston combustion engine

Country Status (5)

Country Link
US (1) US4779578A (en)
EP (1) EP0230646B1 (en)
JP (1) JPS62150030A (en)
AT (1) ATE48672T1 (en)
DE (2) DE3545821A1 (en)

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DE3786917D1 (en) * 1987-05-15 1993-09-09 Leybold Ag SINGLE OR MULTI-STAGE TWO-SHAFT VACUUM PUMP.
US4915603A (en) * 1988-08-01 1990-04-10 Brunswick Corporation Rotary engine cooling system
DE3938329A1 (en) * 1989-11-17 1991-05-23 Wankel Gmbh COOLING SYSTEM OF A ROTATIONAL PISTON INTERNAL COMBUSTION ENGINE
JP2770938B2 (en) * 1995-03-08 1998-07-02 サンデン株式会社 Electromagnetic device
JPH10110744A (en) * 1996-10-07 1998-04-28 Sanden Corp Electromagnetic for electromagnetic clutch
DE19720380C1 (en) * 1997-05-15 1998-07-09 Daimler Benz Ag Liquid-cooled crank housing for engine
AT510749B1 (en) * 2010-11-18 2012-09-15 Avl List Gmbh LOBE internal combustion engine

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DE309046C (en) *
AT69589B (en) * 1914-02-03 1915-08-10 Ernst Jaenisch Cylinders for internal combustion engines.
US1680567A (en) * 1922-02-08 1928-08-14 Pitzman Marsh Internal-combustion engine
DE745596C (en) * 1936-01-07 1944-03-21 Hermann Schlagintweit Device for cooling rooms arranged in series combustion chambers (cylinders) of internal combustion engines
GB799658A (en) * 1957-12-02 1958-08-13 Thomas Winter Nichols Improvements in rotary compressors, pumps and the like
DE1125228B (en) * 1958-10-02 1962-03-08 Nsu Motorenwerke Ag Rotary piston machine with a housing having a multi-arched inner jacket area
US3292601A (en) * 1963-10-04 1966-12-20 Daimler Benz Ag Rotary piston internal combustion engine
US3572984A (en) * 1969-09-03 1971-03-30 Curtiss Wright Corp Liquid-cooling system for rotary-piston mechanisms
DE2201886C3 (en) * 1972-01-15 1979-06-13 Audi Nsu Auto Union Ag, 7107 Neckarsulm Housing for rotary piston machines
US4050132A (en) * 1972-12-21 1977-09-27 Audi Nsu Auto Union Aktiengesellschaft Method of producing a housing for circular piston combustion engine of trochoid type
CA1044148A (en) * 1974-02-20 1978-12-12 Outboard Marine Corporation Rotary engine cooling system
US4035112A (en) * 1974-02-20 1977-07-12 Outboard Marine Corporation Rotary engine cooling and exhaust system
US3908579A (en) * 1974-02-20 1975-09-30 Outboard Marine Corp Outboard motor with dual cooling system
US3895889A (en) * 1974-03-04 1975-07-22 Curtiss Wright Corp Liquid cooling system for rotary internal combustion engine
US3964445A (en) * 1974-05-03 1976-06-22 Ford Motor Company Water cooling system - Wankel engine
JPS5312889Y2 (en) * 1976-05-06 1978-04-07
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US4601265A (en) * 1985-06-28 1986-07-22 Cummins Engine Company, Inc. Internal combustion engine with improved coolant arrangement

Also Published As

Publication number Publication date
DE3667520D1 (en) 1990-01-18
US4779578A (en) 1988-10-25
EP0230646A1 (en) 1987-08-05
ATE48672T1 (en) 1989-12-15
DE3545821A1 (en) 1987-07-02
DE3545821C2 (en) 1989-06-01
JPS62150030A (en) 1987-07-04

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